Science

Light

Laws of Reflection

After striking the mirror, the ray of light Is reflected In another direction. The light ray. which strikes any surface. Is called the incident ray. The ray that comes back from the surface after reflection Is known as the reflected ray.Draw lines showing the position of the plane mirror, the incident ray and the reflected ray on the paper with the help of your friends. Remove the mirror and the comb. Draw a line making an angle of 90° to the line representing the mirror at the point where the Incident ray strikes the mirror. This line is known as the normal to the reflecting surface at that point. The angle between the normal and Incident ray Is called the angle of incidence {Zi). The angle between the normal and the reflected ray Is known as the angle of reflection (Zrj . Measure the angle of Incidence and the angle of reflection. Repeat the activity several times by changing the angle of incidence.Do you see any relation between the angle of incidence and the angle of reflection. Are they approximately equal? If the experiment is carried out carefully. it is seen that the angle of incidence is always equal to the angle of reflection. This is known as the law of reflection. Let us perform another activity on reflection.